The Muramasa is a blue-bladed weapon with a very fast attack speed (the highest speed of all swords pre-hardmode). The Muramasa can be swung continuously by holding down the attack key. It also emits a faint amount of blue light upon being swung, much like a Blue Torch, the Hammush, and the Mushroom Spear when being swung. This sword cannot be crafted and can only be found inside the Dungeon. It emits a humming sound when swung.

Notes

The Muramasa was the fastest sword in the game, but since the 1.2 update, there are new swords introduced that are faster than the Muramasa, such as the Cutlass. This makes it the 4th fastest sword in the game.